Whenever I post to Google+, for whichever option I choose, it only posts as plain text. There is no link to the blog and no image. Facebook works fine, giving me a link with a thumbnail image to my blog.

I read "12. Problem: Google+ - Script is not publishing the related thumbnail with each post it sends to Google+”" in the FAQ on the website, and I tried ticking those boxes on the plugin settings for Google+ but it did the same thing.